1. According to the "exhaustion principle", once the intellectual property right holder or licensee legally puts the intellectual product into circulation, part or all of the exclusive rights owned by the original intellectual property right holder are exhausted, and they no longer have the right to prohibit the subsequent use or reuse of the legal right holder.

Therefore, if the genuine receipt is bought by the counters of major shopping malls, there is no infringement problem.

Second, even if we take a step back, let's assume that these "products bought at counters of major shopping malls with receipts" are not genuine. However, as long as it is not knowingly bought, although it belongs to the category of infringement in theory, it can be exempted from liability, that is, it is not liable for compensation. The relevant provisions are as follows:

Paragraph 2 of Article 64 of the Trademark Law:

If you sell a commodity that you don't know is an infringement of the exclusive right to use a registered trademark, and you can prove that the commodity was legally obtained by yourself and explain the supplier, you will not be liable for compensation.

Third, since you are not a special dealer or franchisee of brand underwear, you should pay attention to using appropriate methods when doing publicity or store licensing to avoid making the general public mistakenly think that you are the special dealer of the other party, otherwise there will be infringement problems.